INFICON Explorer Portable Gas Chromatograph - Manual (Page 287)

Explorer Operator Manual
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There are 5 possible co-elutions on Column C.
Bromomethane and chloroethane - Chloroethane and bromomethane co-
elute on all 3 columns and cannot be resolved by
Explorer.
Dichloromethane and 1,1-dichloroethylene - These compounds are separated
on Column B, using the standard method.
t-1,2-Dichloroethylene and vinyl acetate - These compounds may be separated
on either Column B or C, using modified methods.
1,2-Dichloroethane and 1,1,1-trichloroethane - These compounds are separated
on Column B, using the standard method.
Carbon tetrachloride and benzene - These can be resolved by the detectors, as
the PID is not sensitive to carbon tetrachloride, and the ECD does not detect
benzene.
NOTE: Some of the co-elutions listed above may actually be resolved on your specific
instrument.
Compound Library
There are three standard compound libraries - one for each column. The libraries
contain retention time and response information for each of the assay compounds.
These libraries have been determined for the Assay 1 standard method, if the method
is altered, these libraries are no longer valid and a new library must be created,
identifying the compounds with their new retention times and calibration
information. For example, if the column temperature of Column B is increased, the
retention times in the Column B library are no longer valid, since compounds will be
eluting faster than they would in the standard method. You would have to run the
compounds with the new settings and store the compounds in the Library, as
discussed in Compound Library on page
113.